Adjustable handle-bar



No. 613,970. Patented Nov. 8, i893.

W..J. GHRISTY.

ADJUSTABLE HANDLE BAR.

(Application file Oct. 2, 1897.)

(No Model.)

A; 5mm

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UNITED STATES PATENT UFFIC E".

WVILLIAM J. OHRISTY, OF PHILADELPHIA, PENNSYLVANIA.

ADJUSTABLE HANDLE-BAR.

I SPECIFICATION forming part of Letters Patent No. 613,970, dated November 8, 1898.

Application filed October 2, 1897. Serial No. 653,888. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM J. CHRIsTY, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Adjustable Handle-Bars for Bicycles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a novel adjustable handle-bar for bicycles, and has for its object the production of a simple inexpensive device for accomplishing the ready adjustment of the handle-bars Without the rotation and unscrewing of parts which is usuallyincidental to this adjustment.

To the accomplishment of this general ob ject and others subordinate thereto the invention consists in certain novel features and details of construction and arrangement of parts, as hereinafter fully described, illustrated in the drawings, and incorporated in the claim.

In the accompanying drawings, Figure 1 is a side elevation of a portion of abicycle-frame constructed in accordance with my invention. Fig. 2 is a central vertical section of the subject-matter of Fig. 1, showing the locking-pin retracted in dotted lines.

Referring to the numerals on the drawings, 1 and 2 indicate the upper and lower framebars of an ordinary diamond-frame bicycle, provided upon their front ends with headsleeves 3 and 4, within which is rotatably mounted the hollow head 5, provided upon its lower extremity with a brazed crown 6, to which the front fork of the wheel (not illustrated) is secured.

7 indicates a brace-rod connected to the frame-rods 1 and 2 adjacent to the sleeves 3 and 4 and preferably arranged parallel with respect to the head.

8 indicates the usual handle-bar post, extending into the hollow head, provided with handle-bars 9 and with longitudinally-ar-- ranged series of diametrical apertures 10, designed as the post is adjusted to be coincidental with a transverse aperture 11 through the head, preferably adjacent to the lower end of the sleeve 3.

12 indicates a locking-pin adapted to extend through the transverse aperture 11 in the head and through the described aperture 10 in the handle-bar post to fix the longitudinal adj ustment of the latter to bring the handle-bars in their proper relative positions with respect to the saddle, which is ordinarily adjusted to accommodate the convenience of the rider.

Any suitable means for actuating the pin 12 may be employed, or it may be simply inserted without communicating with either element; but in order to insure the retention of the locking-pin and to facilitate its replacement after having been retracted to permit the adjustment of the part I provide a comparatively stout spring 13, augmented bya number of auxiliary springs 14 and secured at its lower end, as bya screw-bolt 15, to the head 5. If desired, the upper end of the spring may be provided with a transverse loop or eye 16, by means of which a limiting-chain l7 and a finger-ring 18 may be connected to the spring to facilitate and to limit the movement of said spring and the second longitudinal movement of the locking-pin, the chain being preferably secured at a suitable point upon the head; The sleeve 4 may be fitted withaball-bearing, as may also the sleeve 3, and the upper end of the head apertured for the reception of a nut 19, provided with a central bar 20 of a size corresponding to the diameter of the handlebar post.

It will be observed from the foregoing that I have produced a simple, durable, and efficient device by means of which the handlebar of a bicycle may be readily adjusted and which will securely retain the parts in their adjusted positions.

While the present embodiment of my invention appears at this time to be preferable, I do not desire to limit myself to the structural details set out, but reserve the right to change, modify, or vary them at will within the scope of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination with the upper and lower frame bars of a bicycle provided with terminal head sleeves spaced apart and a vertical brace-rod extending parallel to the sleeves and connecting said frame-bars, of a hollow cylindrical post rotatably mounted Within the sleeves and provided with a diametrieal aperture located intermediate said sleeves, a handle bar post longitudinally movable Within the head and provided with a longitudinal series of transverse apertures, a spring secured to the head intermediate of the sleeves, a locking-pin extending from the free end of the spring and designed to engage [O the diametrical apertures in the head and post, a finger ring for actuating the spring;

and a flexible loop attached to the locking device and encircling the post for limiting the movement of the locking-pin, substantially as specified.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

WM. J. CIIRISTY; Witnesses:

R. S. REED, JOHN W. OHRIsTY. 

